Malicious PDF — malware analysis report

Heuristics 6

• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• Embedded URL info EMBEDDED_URL
  One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
  URL https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/161049e9b6db78---85301809711.pdf In PDF document text

  • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a8ae18288---34494191626.pdfIn PDF document text
  • http://judyzscotties.com/clients/1/1f/1f1ef5c9f72ce0e5bea5babf356718c6/File/batexotem.pdfIn PDF document text
  • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/2cf55486ce08a082a6553845afbeb7da/poketijeru.pdfIn PDF document text
  • https://torgradio.ru/new/files/file/15422469963.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/gexejavuzafurijerugatub.pdfIn PDF document text
  • https://baobihungphu.com/media/ftp/file/rusesujenu.pdfIn PDF document text
  • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/74nqh2an35eljn9174766ssl7o/xewixiwavaxavufimibal.pdfIn PDF document text
  • https://mgogs.com/mgfiles/file/64056503705.pdfIn PDF document text
  • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160738e2716d74---kizaxavevovuparevegigodam.pdfIn PDF document text
  • https://nhaccugiare24h.com/uploads/userfiles/file/rozedum.pdfIn PDF document text
  • https://shopexpert.com/app/webroot/files/userfiles/files/67294626681.pdfIn PDF document text
  • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/6ddb1b58cc08deb44aea61beaa9e7791/61262550483.pdfIn PDF document text
  • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/c2a4e6f45e3c05418f661c3b9821ad04/jaxovet.pdfIn PDF document text
  • https://esvigo.com/upload/files/14578392722.pdfIn PDF document text
  • http://dominoliberec.eu/images/file/files/12760018622.pdfIn PDF document text
  • http://innovatepc.com/userfiles/file/1509697375.pdfIn PDF document text
  • http://luluscafeonline.com/uploads/files/vejijizazerexo.pdfIn PDF document text
  • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608835fab6bbf---40344749147.pdfIn PDF document text
  • http://kientrucsangtrong.com/plus/files/83923056648.pdfIn PDF document text
  • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/87a8d49e1b7e87df71518988699031ce/47368973222.pdfIn PDF document text
  • https://sieuthimayphat.com/ckfinder/userfiles/files/60310100323.pdfIn PDF document text
  • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/8ca6de35f96f07f6399cc0e86b95aa9d/88072285134.pdfIn PDF document text
  • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5c76bbfb0---jagegegogakodolazokolib.pdfIn PDF document text
  • http://duszek-lasu.pl/userfiles/file/pefizuruvuku.pdfIn PDF document text
  • https://ibextrail.com/editor-images/11214425428.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=geometric+probability+worksheetsPDF link annotation
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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